Verifying the communication with a navigation system (GPS)
For the TV80 system to use and offer correct navigational information, one or more external sensors must be connected. The communication with the sensor is tested.
Prerequisites
The TV80 system is installed as specified by the relevant installation instructions.
•  The sensor is connected to a communication port on the computer. The sensor is turned on and in normal operation.
•  The interface port is set up with the correct communication parameters.
•  The TV80 system is turned on and operates normally.
Neither tools nor instruments are required. For connections and communication parameters, see the relevant end-user documentation from the sensor manufacturer.
Context
Most global positioning system (GPS) receivers provide NMEA 0183 datagrams containing geographical latitude and longitude information, as well as current speed and sailed distance. Some GPS systems will also provide the current heading, but this information is normally taken from the gyro.
The communication parameters defined for NMEA 0183 are:
•  Baud rate: 4800 bit/s
•  Data bits: 8
•  ParityEven
•  Stop bits: 1
Some instruments may provide other parameters and/or options. You must always check the relevant technical documentation supplied by the manufacturer.
Procedure
1 Observe the top bar.
2 Make sure that the information from the sensor is displayed.
3 If possible: Use another instrument to verify that the information provided by the TV80 system is correct.
4 Open the Setup menu.
5 On the Setup menu, select Installation.
Observe that the Installation dialog box opens.
6 Observe the I/O Setup page on the right side of the Installation dialog box.
Every interface is presented as a small "block diagram".
a In the relevant block diagram, select the serial port icon.
b Observe that the Serial Port Setup dialog box opens.
c Make sure that the communication parameters are correct.
Adjust the settings if it is necessary.
d Close the dialog boxes.
7 Select Navigation to open the dialog box.
a Open the relevant page.
b Make sure that the communication parameters are correct.
Adjust the settings if it is necessary.
c Close the dialog box.